https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104638
Bug ID: 104638
Summary: ICE: maximum number of LRA assignment passes is
achieved (30) with -O
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: rtl-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: zsojka at seznam dot cz
Target Milestone: ---
Host: x86_64-pc-linux-gnu
Target: x86_64-pc-linux-gnu
Created attachment 52490
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=52490&action=edit
reduced testcase
Compiler output:
$ x86_64-pc-linux-gnu-gcc -O testcase.c
during RTL pass: reload
testcase.c: In function 'foo':
testcase.c:19:1: internal compiler error: maximum number of LRA assignment
passes is achieved (30)
19 | }
| ^
0x11b4d4c lra_assign(bool&)
/repo/gcc-trunk/gcc/lra-assigns.cc:1694
0x11af12f lra(_IO_FILE*)
/repo/gcc-trunk/gcc/lra.cc:2395
0x115fbc9 do_reload
/repo/gcc-trunk/gcc/ira.cc:5940
0x115fbc9 execute
/repo/gcc-trunk/gcc/ira.cc:6126
Please submit a full bug report, with preprocessed source (by using
-freport-bug).
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
$ x86_64-pc-linux-gnu-gcc -v
Using built-in specs.
COLLECT_GCC=/repo/gcc-trunk/binary-latest-amd64/bin/x86_64-pc-linux-gnu-gcc
COLLECT_LTO_WRAPPER=/repo/gcc-trunk/binary-trunk-r12-7324-20220222104313-gd44dc131f48-checking-yes-rtl-df-extra-amd64/bin/../libexec/gcc/x86_64-pc-linux-gnu/12.0.1/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: /repo/gcc-trunk//configure --enable-languages=c,c++
--enable-valgrind-annotations --disable-nls --enable-checking=yes,rtl,df,extra
--with-cloog --with-ppl --with-isl --build=x86_64-pc-linux-gnu
--host=x86_64-pc-linux-gnu --target=x86_64-pc-linux-gnu
--with-ld=/usr/bin/x86_64-pc-linux-gnu-ld
--with-as=/usr/bin/x86_64-pc-linux-gnu-as --disable-libstdcxx-pch
--prefix=/repo/gcc-trunk//binary-trunk-r12-7324-20220222104313-gd44dc131f48-checking-yes-rtl-df-extra-amd64
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 12.0.1 20220222 (experimental) (GCC)
